In season 4 Spike is the most interesting character of them all, I think. It's this whole bad boy attitude, that made me interested in him, and also the fact he has to start working with the scoobies to keep himself alive. He's such an incredibly interesting persona. I can't recall much of it now. It's been ages since I've seen the episodes. Darn.

FFL wasn't the ep that won me over, but the one that told me I was right in being interested in this "creature". It is the ep that made Spike P.'s favourite character as well.

Strangely one of my favourite episodes is S3's "The Wish", but that's because of the complete alternate universe in it and because no other series has ever pulled this one off so good as BtVS. It's also why I like the Jonathan episode so much in S4.